Article (Scientific journals)
The right dorsal premotor mosaic: organization, functions, and connectivity
Genon, Sarah; Li, Hai; Fan, Lingzhong et al.
2017In Cerebral Cortex, 27 (3), p. 2095-2110
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Abstract :
[en] The right dorsal premotor cortex (PMd) of humans has been reported to be involved in a broad range of motor and cognitive functions. We explored the basis of this behavioral heterogeneity by performing a connectivity-based parcellation using meta-analytic approach applied to PMd coactivations. We compared our CBP results to parcellations obtained through resting-state functional connectivity and probabilistic diffusion tractography,. Functional connectivity profiles and behavioral decoding of the resulting PMd subregions allowed characterizing their respective behavior profile. These procedures divided the right PMd into five distinct subregions that formed a cognitive-motor gradient along a rostro-caudal axis. In particular, we found (i) a rostral subregion functionally connected with prefrontal cortex, which likely supports high-level cognitive processes, such as working memory (ii) a central subregion showing a mixed behavioral profile and functional connectivity to parietal regions of the dorsal attention network, and (iii) a caudal subregion closely integrated with the motor system. Additionally, we found (iv) a dorsal subregion, preferentially related to hand movements and connected to both cognitive and motor regions, and (v) a ventral subregion, whose functional profile fits the concept of an eye-movement related field. In conclusion, right PMd may be considered as a functional mosaic formed by five subregions.
Disciplines :
Neurosciences & behavior
Author, co-author :
Genon, Sarah ;  Université de Liège > Département des sciences cliniques > Neuroimagerie des troubles de la mémoire et révalid. cogn.
Li, Hai
Fan, Lingzhong
Müller, Veronika I.
Cieslik, Edna C.
Hoffstaedter, Felix
Reid, Andrew T.
Langner, Robert
Grefkes, Christian
Fox, Peter T.
Moebus, Susanne
Caspers, Svenja
Amunts, Katrin
Jiang, Tianzi
Eickhoff, Simon B.
More authors (5 more) Less
Language :
English
Title :
The right dorsal premotor mosaic: organization, functions, and connectivity
Publication date :
2017
Journal title :
Cerebral Cortex
ISSN :
1047-3211
eISSN :
1460-2199
Publisher :
Oxford University Press, Cary, United States - North Carolina
Volume :
27
Issue :
3
Pages :
2095-2110
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 26 February 2016

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